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Ruby gem for phone validation and formatting using google libphonenumber library data

• ruby
• google-libphonenumber
• phone-validation
• phone-parse

:credit_card: ruby gem for validating credit cards, generating credit card numbers, Luhn checks

• credit-card
• validation
• e-commerce
• rails

Counter caches for Rails computed from any block, such as conditional counts or sums, kept up to date by callbacks on any number of models and stored in a column, a shared counters table or your cache store. Recounts run after commit, so concurrent saves can't leave a stale value.